gear box shifts up early but thinking that's due new motor combo. did have ls1 cammed combo but now running 408 cnc rect. heads
comp cam stock ls3 manifold with cable fast 92 throttle body. car up shifts to early but thinking that's due to the new motor making more torque so not as much throttle needed .hence shift points all out at part throttle but it hits the fuel cut before it up shifting at wot shifts could so one give me some pointers.